What are the main connectivity options for the QDD-400G-SR4?

It can be interconnected with OSFP or QSFP112 port NICs. Since the NIC side is 4-channel, it can't be connected with the regular short-range 8-channel QDD-400G-SR8 module, so it's very suitable for short-range switch and NIC interconnection scenarios.

What are the similarities and differences between QDD-400G-SR4 and QDD-400G-SR8?

Both are suitable for 400G short-haul transmission solutions, and the electrical side is 8x50G PAM4 modulation. However, the optical side of 400GBASE-SR4 is 4x100G PAM4 modulation, which is interconnected with QSFP112/OSFP SR4 modules via MTP/MPO-12 APC multimode patch cables; the optical side of 400GBASE-SR8 is 8x50G PAM4 modulation, which is interconnected with two 400G SR8 modules via MTP/MPO-16 APC multimode patch cables. The 400GBASE-SR8 optical side is 8x50G PAM4 modulated and interconnects two 400G SR8 modules via MTP/MPO-16 APC multimode patch cords.

400GBASE-SR4 QSFP-DD PAM4 850nm 100m MMF Module for Arista

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Arista Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m MTP/MPO-12 MMF Optical Transceiver Module

Name: Arista Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m MTP/MPO-12 MMF Optical Transceiver Module
Brand: Naddod
SKU: 101634
Price: 559.00 USD
Availability: InStock
Rating: 5.0 (18 reviews)

#101634

Model: QDD-400G-SR4

Sold: 12

In Stock: 95

$ 559.00

Transceiver Types:

QDD-400G-SR4

QDD-400G-SR4

Brand:

Cisco

Arista

Dell

NVIDIA/Mellanox (Ethernet)

Generic

Cisco

Juniper

Arista

Dell

NVIDIA/Mellanox (Ethernet)

Item Spotlights

Max Power Consumption ≤8W.
Provide Professional Compatibility and Parameter Test Reports.
Compliant with Hot Pluggable QSFP-DD MSA, IEEE 802.3bs, SFF-8679 Standard.
Class1/1M Standard Product, Compliant with RoHS Environmental Protection Standards (Lead-Free).
DDM(Digital Diagnostic Monitoring) Supported.
Significantly Improve the Flexibility, Economy and Reliability of Networking.
30-Day Free Return, 1-Year Free Replacement, 3-Year Warranty, Lifetime After-sales Technical Support.

Arista Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m MTP/MPO-12 MMF Optical Transceiver Module

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Specifications

Applications

Questions & Answers

Customer Reviews

Resources

Specifications

Applications

Questions & Answers

Customer Reviews

Resources

Description

Arista Compatible 400G QSFP-DD SR4 PAM4 850nm MTP/MPO-12 OM4 100m Optical Transceiver Module

Arista compatible QDD-400G-SR4 is a multi-mode 4-channel (SR4) QSFP-DD optical transceiver, designed for 400 Gigabit Ethernet (GbE) links on up to 100m of OM4 multimode fiber. The QDD-400G-SR4 converts 8 input channels of 50Gb/s PAM4 electrical data to 4 channels of 100Gb/s PAM4 optical signals, using a nominal wavelength of 850nm, for 400Gb/s optical transmission. This module reduces the number of fiber channels and can interconnect with 400G SR4 modules on OSFP or QSFP112 adapter cards to meet diverse application scenarios for interconnection between different devices.

Specifications

Form Factor

QSFP-DD

Distance

100m

Wavelength

850nm

Connector

MTP/MPO-12 APC

Power Consumption

≤8W

Transmitter

VCSEL

Receiver

Media

MMF

Modulation（electrical ）

8x53.125Gb/s PAM4

Modulation（Optical ）

4x106.25Gb/s PAM4

Case Temperature(℃)

0 to 70°C (32 to 158°F)

Protocol

400G Ethernet Compliant

Connectivity Solutions

The Spine-Leaf Architecture

This solution provides seamless interconnectivity between QSFP-DD switches and OSFP network cards, addressing the compatibility issues between different port form factors. It ensures a seamless connection between devices with different port enclosures.

Juniper QFX5220-32CD,Juniper QFX5220-32CD,Juniper QFX5220-32CD,Juniper QFX5220-32CD

Applications

Questions & Answers

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Can OSFP ports use modules in QSFP-DD form factor, such as QDD-400G-SR4?

OSFP and QSFP-DD are two completely different form factors, so QSFP-DD optical modules like QDD-400G-FR4, QDD-400G-SR4, QDD-400G-LR4 or QDD-400G-DR4 all these optical transceivers cannot be used in OSFP ports.

Can I interconnect a QSFP-DD 400G SR4 module on one end and a QSFP112 or OSFP 400G SR4 module on the other?

Yes, the QSFP-DD/OSFP/QSFP112 only describe the physical form factor of the module and all three modules utilize 4x100G PAM4 for the optical side modulation mode.

What is the maximum transmission distance of QDD-400G-SR4 transceiver?

With OM4 multimode fiber optic patch cable the maximum transmission distance is 100m.

Customer Reviews

5.0

3 Reviews

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All Reviews (3)

b***r
Verified Purchase
b***r
Verified Purchase
5.0
We are upgrading our network, and the SR4 modules are ideal for short-distance connections.
Helpful (7)Comments
e***e
Verified Purchase
e***e
Verified Purchase
5.0
We wanted to use this module on a QDD port switch to connect to an OSFP NIC, and it’s a perfect fit. These SR4 transceivers are working flawlessly on our switch, and we haven’t encountered any compatibility issues so far.
Helpful (10)Comments
e***6
Verified Purchase
e***6
Verified Purchase
5.0
This is our first time purchasing 400G modules, and they are even easier to deploy than I expected, with no packet loss at all.
Helpful (1)Comments

Resources

QDD-400G-SR4 Datasheet

Quality Certification

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